Marshall electronic FR Fascicule

Thank you for purchasing an MXL FR series boundary microphone. 

With proper care, these microphones will provide many years of 

satisfaction. For best results, please take a few moments to review this 

literature.

MXL FR series boundary microphones feature multiple capsules, (three 

in the FR 400 and 401M, two in the FR 402) to ensure a wide yet 

controlled pick up pattern. They have been designed with high quality 

FET pre-amps, to ensure outstanding audio quality under even the most 

demanding conditions. The FR series boundary microphones require 

48v phantom power to operate. Phantom power is available from most 

professional video cameras and mixers.

The MXL FR-400 has a switch located on the bottom of the 

microphone, which can boost or cut low frequencies by 6dB to balance 

the frequency response for different applications. Experimentation with 

both positioning and selection of the most suitable microphone for any 

given application is recommended, as both can have a pronounced effect 

upon the quality of recordings.

If for any reason you get no sound from your FR series boundary 

microphone, please check that phantom power is being correctly supplied.

Dust and foreign material can degrade the performance of a microphone 

over time so always store the unit in a warm dry place. Remove 

fingerprints from the exterior with a clean, dry soft cloth.

Marshall Electronics

1910 East Maple Ave. El Segundo, CA 90245

Phone: (310) 333-0606 Fax: (310) 333-0688

E-mail: Sales@mxlmics.com

www.MXLmics.com

MXL FR series microphones are guaranteed against defects in material and 

workmanship for ONE year from date of purchase. Should you encounter any 

problem with this unit, promptly contact the company you purchased it from 

for assistance. The original dated sales receipt will be necessary for any warranty 

claim. Do not send any unit directly to us without prior authorization from our 

service department! Warranty coverage is limited to repair or replacement (at 

our option) of the microphone, and does not cover incidental damages due to 

use of this unit, nor damage caused by accidental misuse of this product.